Lemongrass leaves may refer to the Chinese medicine lemongrass, which can be used as a decoction of water for internal use or a decoction of water for cleansing, or as a powdered compress, in addition to being used with other traditional Chinese medicines. Lemongrass is pungent, sweet and warm in nature, and its effects are dispersing cold and relieving cold, dispelling wind, warming the middle and relieving pain (relieving pain by warming the spleen and stomach). It is mainly used to treat rheumatism and bone pain, bruises and swelling, cold pain in the epigastrium (cold pain in the stomach and abdomen), and also has a certain effect on diarrhea and headache; lemongrass can be decocted with water or used externally in appropriate quantities, and it can be used in combination with other medicines according to the condition. The adverse effects of lemongrass are not clear at present; contraindications and precautions are also uncertain. If you need to use Chinese medicine lemongrass, you should use it under the guidance of a traditional Chinese medicine practitioner, and should not use the medicine by yourself to avoid adverse effects on the body.